Paddle-wheel.



No. 880,353. PATENTED FEB. 25, 1908.

0. BROWN. PADDLE WHEEL.

APPLICATION FILED JAN, 29} 1906.

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' the following is a specification.

OTTO BROWN, OF SACRAMENTO, CALIFORNIA.

PADDLE-WHEEL.

Specification of Letters Patent.

Patented Feb. 25, 1908.

Application filed January 29. 1906- Serial No. 298-361.

To all whom it may concern:

Be it known that I, OTTO BROWN, a citizen of the United States, residing at Sacramento, in the county of Sacramento and State of California, have invented new and useful Improvements in Paddle-Wheels, of which This invention as for its object the production of an improved propelling device for vessels operating after the manner of a paddle-wheel and adapted for use either at the sides of the vessel, or across the stern, as may be better suited to the character of the vessel or the body of water in which it is intended to travel.

The invention comprises propelling-disks of novel construction combined in pairs upon a common shaft on which they are adjustable at varying angles obliquely to the shaft for the purpose of changing and regulating their holding power and effect on the body of water, all as hereinafter described and pointed out in the claims at the end of this specification.

The accompanying drawings herein referred to and forming part of this specification represent in Figure 1 a plan or top-view of my improved propelling device applied to a vessel after the manner of addle-wheels, that is to say with the crank-s aft across the hull and having the propelling-devices mounted on the outer ends at the sides of the hull. Fig. 2 is a similar-view, showing the propelling device placed at the stern of the vessel.

Fig. 3 is a rear-view of one of the propelling-- disks on an enlarged scale. Fig. 4 is a crosssection on the line :1ca:, Fig. 3.

In its simplest form the invention comprises a pair of fiat disks A-B each of circular outline having se mental portions cut out, or removed, from t e margin towards the axis, as from the points a a on one side of the axis, and a a on the side diametrically opposite.

The portions remaining in the disk constitute blades each having a curved rim, and a flat face decreasing in width towards the axis at which point the center of the disk is provided with a central aperture to admit the shaft D.

A hub E having a flange F on one end set obliquely to the axis is keyed or otherwise secured on to the shaft D, and by means of bolts and nuts G, the disk is fastened to the flange. By removing the bolts the disk can be turned axially and set at a different angle to the shaft, and by providing several additional bolt-holes on the flange and the disk at intervals apart around the axis the disk can be shifted on the flange so that the blades will stand in position more or less oblique to the axis without changing the position of the hub. The disk A is secured in such manner to the flange F ofthe hub E, and the disk B to the flange F of the hub E The two disks A B forming a pair are fixed on the shaft D in such position that their flanges F F stand at opposing or contrary angles across the axis, and the disks secured to throw are so set that the blades of one disk lie in or are opposite to the cut away portions or open spaces between the blades of the other disk of the pair. By virtue of this position the acting surfaces of the blades of each disk composing a pair are presented to and caused to strike the water at an oblique angle to the axis of rotation, and as the blades of one disk set at an opposite angle to those of the other, the blades composing the pair are caused to impinge the Water from contrary directions.

Thepitoh or angular position of the blades of each disk with respect to the axis of rota tion is adjusted by detaching the disk from its hub and turning it axially as before explained.

In the application of the propelling device to work at the sides of a vessel in the same position as-paddle-wheels are operated, a pair position to the blade A in the pairA B and the blades BB are likewise opposed to each other.

The effect of such adjustment is that the adjacent blades A B in the center act on the body of water from opposite directions, one towards the right and the other towards the left in the same manner as the blades composing each pair are arranged to act.

In placing this device in a vessel the shaft D should be set nearly on the water line, or in close relation to the surface of the water.

I have termed my invention an improved paddle-wheel to distinguish it from those devices that resemble screw-propellers, or like them are placed at the stern of the vessel and liavle their axis of rotation parallel with the we What I claim as my invention, and desire to secure by Letters Patent is 1. A propelling device for vessels, comprising a shaft, a pair of disks, A, B, mounted thereon, each formed with two blades extending out from the shaft in opposite directions and united by a narrowed portion whereby are formed recesses between the blades, the disks being oblique to ,the shaft and inclined at contrary angles with reference to each other, .and the blades of the disk A being disposed opposite'to the spaces between the blades of the disk B, substantially as set forth.

2. In a propelling-device for vessels, the combination of propelling blades arranged in pairs, a common shaft each pair composed of two sets of blades disposed on opposite sides of a common shaft in alternate manner and with the blades of the same set at an oblique angle and in contrary position to the blades of the other set, said blades being adjustable at varying angles with respect to the axis of rotation.

In testimony whereof I have signed my name to this specification in the presence of two witnesses.

OTTO BROWNQ V Witnesses E. ,KRUTTSCHNITT,

C. F. WHITE. 

